package com.ilancuo.thinkinjava.chapter_14;

import java.lang.reflect.Constructor;
import java.lang.reflect.Method;
import java.util.regex.Pattern;

public class ShowMethods {
    private static String usage =
            "usage:\n" +
                    "ShowMethods qualified.class.name\n" +
                    "To show all methods in class or:\n" +
                    "ShowMethods qualified.class.name\n" +
                    "To search for methods invoking 'word'";

    private static Pattern p = Pattern.compile("\\w+\\.");

    public static void main(String[] args) {
        int lines = 0;
        try {
            Class<?> c = Class.forName(ShowMethods.class.getName());
            Method[] methods = c.getMethods();
            Constructor<?>[] constructors = c.getConstructors();
            if (args.length == 1) {
                for (Method method : methods)
                    System.out.println(p.matcher(method.toString()).replaceAll(""));
                for (Constructor constructor : constructors)
                    System.out.println(p.matcher(constructor.toString()).replaceAll(""));
                lines = methods.length + constructors.length;
            } else {
                for (Method method : methods) {
                    if (method.toString().indexOf(args[1]) != -1) {
                        System.out.println(p.matcher(method.toString()).replaceAll(""));
                        lines++;
                    }
                }
                for (Constructor constructor : constructors) {
                    if (constructor.toString().indexOf(args[1]) != -1) {
                        System.out.println(p.matcher(constructor.toString()).replaceAll(""));
                        lines++;
                    }
                }
            }
        } catch (ClassNotFoundException e) {
            e.printStackTrace();
        }
    }

}
